1. Power Supply
2. Systemboard-Motherboard
   
3. Processor
4. RAM (Random Access Memory)
5. Video Card
6. Drives
1. Hard Disks
2. Optical Disks
3. USB Disks
4. Firewire Disks
7. Sound Card
8. Other
1. Fans
2. Enclosures-Cases
3. Peripherals